Re: [f2fs-dev] [PATCH v2 2/2] f2fs/007: add testcase to check consistency of compressed inode metadata

[Chao Yu via Linux-f2fs-devel <linux-f2fs-devel@lists.sourceforge.net>]

On 2024/10/25 11:58, Zorro Lang wrote:
> On Wed, Oct 23, 2024 at 04:16:02PM +0800, Chao Yu wrote:
>> metadata of compressed inode should always be consistent after file
>> compression, reservation, releasement and decompression, let's add
>> a testcase to check it.
>>
>> Cc: Jaegeuk Kim <jaegeuk@kernel.org>
>> Cc: Qi Han <hanqi@vivo.com>
>> Signed-off-by: Chao Yu <chao@kernel.org>
>> ---
>> v2:
>> - add _fixed_by_kernel_commit()
>> - code cleanup
>> - add error handling for _scratch_mkfs()
>>   tests/f2fs/007     | 116 +++++++++++++++++++++++++++++++++++++++++++++
>>   tests/f2fs/007.out |   4 ++
>>   2 files changed, 120 insertions(+)
>>   create mode 100755 tests/f2fs/007
>>   create mode 100644 tests/f2fs/007.out
>>
>> diff --git a/tests/f2fs/007 b/tests/f2fs/007
>> new file mode 100755
>> index 00000000..8979c21c
>> --- /dev/null
>> +++ b/tests/f2fs/007
>> @@ -0,0 +1,116 @@
>> +#! /bin/bash
>> +# SPDX-License-Identifier: GPL-2.0
>> +# Copyright (c) 2024 Oppo.  All Rights Reserved.
>> +#
>> +# FS QA Test No. f2fs/007
>> +#
>> +# This is a regression test to check whether compressed metadata
>> +# can become inconsistent after file compression, reservation
>> +# releasement, and decompression.
>> +#
>> +. ./common/preamble
>> +_begin_fstest auto quick rw compress
>> +
>> +_fixed_by_kernel_commit xxxxxxxxxxxx \
>> +        "f2fs: compress: fix inconsistent update of i_blocks in release_compress_blocks and reserve_compress_blocks"
>> +
>> +testfile_prefix=$SCRATCH_MNT/testfile
>> +fio_config=$tmp.fio
>> +
>> +cat >$fio_config <<EOF
>> +[write_compressed_data_30]
>> +name=mytest
>> +ioengine=psync
>> +rw=write
>> +direct=0
>> +bs=1M
>> +filesize=1M
>> +numjobs=1
>> +filename=${testfile_prefix}30
>> +buffer_compress_percentage=30
>> +
>> +[write_compressed_data_60]
>> +name=mytest
>> +ioengine=psync
>> +rw=write
>> +direct=0
>> +bs=1M
>> +filesize=1M
>> +numjobs=1
>> +filename=${testfile_prefix}60
>> +buffer_compress_percentage=60
>> +
>> +[write_compressed_data_90]
>> +name=mytest
>> +ioengine=psync
>> +rw=write
>> +direct=0
>> +bs=1M
>> +filesize=1M
>> +numjobs=1
>> +filename=${testfile_prefix}90
>> +buffer_compress_percentage=90
>> +EOF
>> +
>> +_require_scratch
> 
> Better to move _require_scratch before "testfile_prefix=$SCRATCH_MNT/testfile".
> Due to we'd better to make sure there's $SCRATCH_MNT, before using it.
> 
>> +_require_fio $fio_config
>> +_scratch_mkfs "-f -O extra_attr,compression" >> $seqres.full || _fail "mkfs failed"
>> +_scratch_mount "-o compress_mode=user,compress_extension=*" >> $seqres.full
>> +
>> +echo -e "Run fio to initialize file w/ specified compress ratio" >> $seqres.full
>> +cat $fio_config >> $seqres.full
>> +$FIO_PROG $fio_config >> $seqres.full
>> +_scratch_unmount
>> +
>> +# force to repaire if filesystem is corrupted
>> +export FSCK_OPTIONS="-f $FSCK_OPTIONS"
>> +
>> +for i in 30 60 90; do
>> +	testfile=$testfile_prefix$i
>> +
>> +	_scratch_mount "-o compress_mode=user" >> $seqres.full
>> +	$F2FS_IO_PROG compress $testfile >> $seqres.full
>> +	cblocks=`$F2FS_IO_PROG get_cblocks $testfile`
>> +	echo "compression ratio is: "$cblocks" / 256"
>> +
>> +	_scratch_unmount
>> +
>> +	# 1. check after compression
>> +	_check_scratch_fs
>> +	if [ $? -ne 0 ]; then
>> +		_fail "filesystem becomes corrupted after compress"
>> +	fi
>> +
>> +	_scratch_mount >> $seqres.full
>> +	$F2FS_IO_PROG release_cblocks $testfile >> $seqres.full
>> +	_scratch_unmount
>> +
>> +	# 2. check after releasement
>> +	_check_scratch_fs
>> +	if [ $? -ne 0 ]; then
>> +		_fail "filesystem becomes corrupted after release_cblocks"
> 
> The _fail is not necessary, due to _check_scratch_fs will do "exit 1"
> if it find a corruption. If you need some message, maybe echo it before
> calling _check_scratch_fs?
> 
>> +	fi
>> +
>> +	_scratch_mount >> $seqres.full
>> +	$F2FS_IO_PROG reserve_cblocks $testfile >> $seqres.full
>> +	_scratch_unmount
>> +
>> +	# 3. check after rservation
>> +	_check_scratch_fs
>> +	if [ $? -ne 0 ]; then
>> +		_fail "filesystem becomes corrupted after reserve_cblocks"
>> +	fi
> 
> Same as above
> 
>> +
>> +	_scratch_mount "-o compress_mode=user" >> $seqres.full
>> +	$F2FS_IO_PROG decompress $testfile >> $seqres.full
>> +	_scratch_unmount
>> +
>> +	# 4. check after decompression
>> +	_check_scratch_fs
>> +	if [ $? -ne 0 ]; then
>> +		_fail "filesystem becomes corrupted after decompress"
>> +	fi
> 
> Same as above.

Okay, let me update the patch.

Thanks,

> 
> Thanks,
> Zorro
> 
>> +done
>> +
>> +status=0
>> +exit
>> diff --git a/tests/f2fs/007.out b/tests/f2fs/007.out
>> new file mode 100644
>> index 00000000..2ea71c18
>> --- /dev/null
>> +++ b/tests/f2fs/007.out
>> @@ -0,0 +1,4 @@
>> +QA output created by 007
>> +compression ratio is: 64 / 256
>> +compression ratio is: 128 / 256
>> +compression ratio is: 192 / 256
>> -- 
>> 2.40.1
>>
> 



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